While the Me Gusta face is more commonly used for disturbingly erotic things in rage comics,
that doesn't mean that's what Me Gusta is all about.
Me Gusta translates directly to "I like"
so you can use Me Gusta for anything that you perceive as likable, such as kitties and puppies and unicorns.
It doesn't have to be disturbing.

What was so dumb about it? You're not understanding that ALTHOUGH the translation roughly means "I like" the rage face is not used in that context, it was made for situations where the character is enjoying something that is to be interpreted as not being socially normal or gross, just look it up!